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Machining Group Reference Chart for Cast Irons |
|
MG# |
Material Description |
Hardness |
Grade Selection |
SFM |
MPM |
|
1 |
Gray Iron |
160-260 BHN |
CM-1
CG5
ALO |
100-250
150-375
200-900 |
30,48 - 76,20
45,72 - 114,30
60,96 - 274,32 |
C2
C3
C25
TN7 |
100-300
150-350
150-350
200-650 |
30,48 - 91,44
45,72 - 106,68
45,72 - 106,68
60,96 - 198,12 |
|
2 |
Ferritic Ductile |
140-200 BHN |
CM-1
CG5
ALO |
75-200
150-350
200-750
|
22,86 - 60,96
45,72 - 106,68
60,96 - 228,60 |
|
3 |
Ferritic Maleable |
C2
C3
C25
TN7 |
100-250
150-350
150-350
200-600 |
30,48 - 76,20
45,72 - 106,68
45,72 - 106,68
91,44 - 182,88 |
|
4 |
Pearlitic Ductile |
220-260 BHN |
CM-1
CG5
ALO |
75-200
150-250
200-650 |
22,86 - 60,96
45,72 - 76,20
60,96 - 198,12 |
|
5 |
Pearlitic Maleable |
C2
C3
C25
TN7 |
100-250
150-350
150-350
200-600 |
30,48 - 76,20
45,72 - 106,68
45,72 - 106,68
91,44 - 182,88 |
|
Darker areas are CIRCLE'S primary insert grade recommendations
and surface speeds for the material shown. Insert grades shown in the lighter areas,
reflect secondary choices. Machining speeds, feeds, and depth of cuts are considered
to be "safe" starting conditions. |
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Machining Conditions for Boring Cast Iron
|
|
Circle
|
Inch
|
Metric
|
|
Insert
|
Depth of Cut
(Per Side)
|
Feed Rate
(IPR)
|
Depth of Cut
(Per Side)
|
Feed Rate
(MMPR)
|
|
ABD 06 |
0.001" - 0.006" |
0.002" - 0.0005" |
0,025 - 0,154 |
0,051 - 0,013 |
|
ABD 09 |
0.001" - 0.006" |
0.002" - 0.0005" |
0,025 - 0,154 |
0,051 - 0,013 |
|
ABD 125 |
0.001" - 0.009" |
0.003" - 0.0005" |
0,025 - 0,229 |
0,076 - 0,013 |
|
ABD 156 |
0.001" - 0.010" |
0.004" - 0.001" |
0,025 - 0,254 |
0,702 - 0,025 |
|
ABC TYPE |
0.002" - 0.010" |
0.007" - 0.001" |
0,051 - 0,254 |
0,178 - 0,025 |
|
BB 187 |
0.002" - 0.010" |
0.007" - 0.001" |
0,051 - 0,254 |
0,178 - 0,025 |
|
BB 250 |
0.002" - 0.010" |
0.007" - 0.001" |
0,051 - 0,254 |
0,178 - 0,025 |
|
BB 312 |
0.002" - 0.010" |
0.007" - 0.001" |
0,051 - 0,254 |
0,178 - 0,025 |
|
CDCD-5 |
0.002" - 0.010" |
0.007" - 0.001" |
0,051 - 0,254 |
0,178 - 0,025 |
|
CDCG-5 |
0.002" - 0.010" |
0.007" - 0.001" |
0,051 - 0,254 |
0,178 - 0,025 |
|
CDCT-5 |
0.003" - 0.012" |
0.009" - 0.002" |
0,076 - 0,305 |
0,229 - 0,025 |
|
CPCA-2 |
0.002" - 0.015" |
0.007" - 0.001" |
0,051 - 0,381 |
0,178 - 0,025 |
|
CPCM-2 |
0.002" - 0.015" |
0.010" - 0.001" |
0,051 - 0,381 |
0,254 - 0.025 |
|
CPGT-3 |
0.002" - 0.100" |
0.015" - 0.001" |
0,051 - 2.540 |
0,384 - 0,025 |
|
CPMT-3 |
0.005" - 0.100" |
0.015" - 0.005" |
0,127 - 2,540 |
0,381 - 0,127 |
|
GCCD-6 |
0.002" - 0.015" |
0.009" - 0.001" |
0,051 - 0,305 |
0,229 - 0,051 |
|
GCCT-6 |
0.003" - 0.017" |
0.009" - 0.002" |
0,076 - 0,432 |
0,229 - 0,051 |
|
GPCD-5 |
0.002" - 0.010" |
0.007" - 0.001" |
0,051 - 0,254 |
0,178 - 0,025 |
|
GPCT-5 |
0.003" - 0.012" |
0.009" - 0.002" |
0,076 - 0,305 |
0,229 - 0,051 |
|
TDAB-5 |
0.002" - 0.008" |
0.004" - 0.001" |
0,051 - 0,203 |
0,102 - 0,025 |
|
TDAT-5 |
0.003" - 0.010" |
0.009" - 0.002" |
0,076 - 0,254 |
0,229 - 0,051 |
|
TDCG-5 |
0.002" - 0.008" |
0.004" - 0.001" |
0,051 - 0,203 |
0,102 - 0,025 |
|
TPCB-2 |
0.002" - 0.030" |
0.010" - 0.001" |
0,051 - 0,762 |
0,254 - 0,025 |
|
TPCG-2 |
0.002" - 0.009" |
0.005" - 0.002" |
0,051 - 0,229 |
0,127 - 0,151 |
|
TPCH-2 |
0.002" - 0.030” |
0.010" - 0.001" |
0,051 - 0,762 |
0,251 - 0,025 |
|
TPGT-2 |
0.002" - 0.006" |
0.005" - 0.002" |
0,051 - 0,154 |
0,127 - 0,051 |
|
TPMT-2 |
0.007" - 0.030" |
0.015" - 0.005" |
0,178 - 0,762 |
0,381 - 0,127 |
|
TD-6P |
0.002" - 0.010" |
0.015" - 0.001" |
0,051 - 0,254 |
0,381 - 0,025 |
|
TPCG-32 |
0.002" - 0.010" |
0.015" - 0.001" |
0,051 - 0,254 |
0,381 - 0,025 |
|
TPGH-32 |
0.002" - 0.100" |
0.015" - 0.001" |
0,051 - 2,540 |
0,381 - 0,025 |
|
TPGT-32 |
0.002" - 0.060" |
0.005" - 0.002" |
0,051 - 1,520 |
0,127 - 0,051 |
|
TPMT-32 |
0.010" - 0.040" |
0.025" - 0.010" |
0,254 - 1,016 |
0,635 - 0,254 |
|
WPGT-2 |
0.002" - 0.020" |
0.010" - 0.001" |
0,051 - 0,508 |
0,254 - 0,025 |
|
WPGT-6 |
0.002" - 0.012" |
0.011" - 0.002" |
0,051 - 0,305 |
0,279 - 0,051 |
|
WPMT-2 |
0.005" - 0.030" |
0.015" - 0.005" |
0,127 - 0,762 |
0,381 - 0,127 |
|
WPMT-3 |
0.005" - 0.100" |
0.015" - 0.005" |
0,127 - 2,540 |
0,381 - 0,127 |
|
WPMT-6 |
0.003" - 0.012" |
0.011" - 0.002" |
0,076 - 0,305 |
0,279 - 0,051 |
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As Depth of Cut increases...Feed Rate ...decreases.
SFM = Surface Footage per Minute. / MPM = Meters Per Minute.
I.P.R. = Inches Per Revolution. / MMPR. = Millimeters Per Revolution.
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